Freeman Bibliographical Database
| Identifier: | F1900.4 |
| Date: | 1988 |
| Concise reference: | Burkhardt, F., S. Smith et al eds. 1988. The correspondence of Charles Darwin. Cambridge: Cambridge University Press. vol. 4: 1847-1850. |
| Identifier: | F1900.4 |
| Date: | 1988 |
| Concise reference: | Burkhardt, F., S. Smith et al eds. 1988. The correspondence of Charles Darwin. Cambridge: Cambridge University Press. vol. 4: 1847-1850. |